<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - vrm loader</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<link type="text/css" rel="stylesheet" href="main.css">
	</head>

	<body>
		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - VRMLoader<br />
			Alicia by
			<a href="https://3d.nicovideo.jp/works/td32797" target="_blank" rel="noopener">Dwango</a> /
			<a href="http://3d.nicovideo.jp/alicia/rule.html">License</a><br />
		</div>

		<script type="module">

			import * as THREE from '../build/three.module.js';

			import Stats from './jsm/libs/stats.module.js';

			import { OrbitControls } from './jsm/controls/OrbitControls.js';
			import { VRMLoader } from './jsm/loaders/VRMLoader.js';

			let container, stats, controls;
			let camera, scene, renderer, light;

			init();
			animate();

			function init() {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
				camera.position.set( 0, 1.6, - 2.2 );

				scene = new THREE.Scene();

				light = new THREE.HemisphereLight( 0xbbbbff, 0x444422 );
				light.position.set( 0, 1, 0 );
				scene.add( light );

				// model
				const loader = new VRMLoader();
				loader.load( 'models/vrm/Alicia/AliciaSolid.vrm', function ( vrm ) {

					// VRMLoader doesn't support VRM Unlit extension yet so
					// converting all materials to THREE.MeshBasicMaterial here as workaround so far.
					vrm.scene.traverse( function ( object ) {

						if ( object.material ) {

							if ( Array.isArray( object.material ) ) {

								for ( let i = 0, il = object.material.length; i < il; i ++ ) {

									const material = new THREE.MeshBasicMaterial();
									THREE.Material.prototype.copy.call( material, object.material[ i ] );
									material.color.copy( object.material[ i ].color );
									material.map = object.material[ i ].map;
									object.material[ i ] = material;

								}

							} else {

								const material = new THREE.MeshBasicMaterial();
								THREE.Material.prototype.copy.call( material, object.material );
								material.color.copy( object.material.color );
								material.map = object.material.map;
								object.material = material;

							}

						}

					} );

					scene.add( vrm.scene );

				} );

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.outputEncoding = THREE.sRGBEncoding;
				container.appendChild( renderer.domElement );

				controls = new OrbitControls( camera, renderer.domElement );
				controls.minDistance = 1;
				controls.maxDistance = 5;
				controls.enableDamping = true;
				controls.target.set( 0, 0.9, 0 );
				controls.update();

				window.addEventListener( 'resize', onWindowResize );

				// stats
				stats = new Stats();
				container.appendChild( stats.dom );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				controls.update(); // to support damping

				renderer.render( scene, camera );

				stats.update();

			}

		</script>

	</body>
</html>
